As an entrepreneur I've learned to fail quickly. My issue is this Startup is going to require more effort than most that I have been involved in. I do 100% believe this product has the ability to make a difference. The difficult part I've found so far is what comes next? I'm a Product UI/UX Designer by trade and marketing & ecommerce hobbyist. My goal is to focus sales on B2B which is outside my wheelhouse. How do you quickly test an Enterprise SAAS concept without spending a ton of resources? I have the features and UI/UX foundation designed as well as a Pitch Deck but what is the next step? Build? Talk to enterprise companies before build? Somehow put together a team?
The first step for any idea is to determine if the idea can be a business. The first step in determining is marketing strategy validation. This is your research stage that begins by making a list of assumptions and then testing each assumption individually. You can read a dozen other discussions here on what steps are involved in marketing strategy validation. But to answer your question, do NOT need a pitch deck. In fact, it's wrong to have one now because your assumptions in that deck have not been proven correct. You should NOT build until you have validated your product is something people want and will pay for, who your audience is, and tested a sales strategy. You do NOT need a team, as the research phase is when you discover which resources and skills you will need and how your product needs to be defined, long before you create it.
Personally I would approach a few prospective clients and then show them what you have in mind and ask them if this would be of value to them and if so how get a ballpark of what they might pay for this product. If not then find out seek to determine what if anything could be added to or changed in the product to make it something they would buy. If you can validate the product that way (ideally directly with the end-user) and get an honest evaluation then that should allow you to gain confidence in the idea and then build up a more formal plan to attempt to determine how big a market you might be targeting, segmenting that market by features, price-points, etc...
You don't provide enough information here to solicit feedback that will be a value for you. B2B sales are complicated. I've tried and failed. I'm not sure what wisdom I can confer to you. You'll often spend about $10,000 - $50,000 just to get your foot in the door so you have to be prepared to offer about $100k - $200k in services to make your money back. Software that tells call center workers to walk around doesn't sound worth the time to implement for just about any business. Likewise, you could attack softphone companies but then you're looking at an acquisition without really demonstrating real market impact. More often than not, every licensee will ask about the tradeoff of building something in-house vs. acquiring (via license or whatever). Before this, they'll ask "what's the gain" of implementing the "thing". Attrition might be a problem, but attrition will be a problem with any worker paid less than $30/h. Healthcare claims might be a problem, but it might also not be as workers may not be able to effectively claim liability against the employer.
I'm not telling you I believe that business uplifts all good ideas or that it's not wrong that business precludes some good ideas.. but this idea doesn't sound like a winner to me. iPhone already provides usage metrics, and you might have more luck looking at B2C as a browser extension (which will cost you more to roll out).