Get Portal Row postion
Go to portal (name the portals)
Go to portal row number
That's the idea and you can find the gets to produce the info. Haven't tried it something like this should work.
Also, the keyboard can be closed by the down arrow on the left (iphone).
Filemaker needs to add for Go a Close Keyboard step, eh? You might try Show/Hide Status bar Hide just in case it works.
I find it much easier when editing or creating a portal record to go to a new layout for that portal table and enter the data there where I can design the layout to work with the keyboard. A Save button on the top commits the record and returns me to the original layout. Much cleaner and less aggravating.