I am very new to Power Apps so please be gentle with me. I have been searching for many, many hours now about comboboxes. Here's what I am looking to replicate; a department used InfoPath extensively in an on-premise site and I am looking to move those forms to online and using Power Apps to replicate as much as possible these InfoPath forms. Mostly, it's going well. But I cannot figure out how or if I can replicate how they are using drop-down list boxes in InfoPath. In particular, they have values that tie to a choice column in SP, then they have a display name that shows in the InfoPath drop-down instead of the value. The value isn't all that useful because it is just a letter but having just a letter in the list is fine because they can click on a record and view what the letter means. So, basically, it is a mask for acceptable values for the column.
I have searched about cascading comboboxes, secondary texts, etc but have not found something to fit this need. I assume it would need to be a combobox because it needs to be multi-select. Anybody have any ideas? Thanks!