Fluid Mobile Inventory

We are using Fluid Mobile Inventory. We are using iPhone XR and bluetooth scanners. Having trouble configuring so when a user navigates to a navigating to a page, the curser is active in the first field to scan without the user having to tap. We are also having trouble getting the tab to work on all pages. We have only been able to get it to work on the Item Stock Inquiry page. Lastly - Has anyone been successful when finished scanning information, developing a scan or setting up configuration to activate the action button, i.e., Search, OK, Enter?