Marcus,
I’m not familiar with that program, but if you’re allowed to specify any custom fields, etc, this should probably work much like the native EE SAEF:
Create a custom field called ”tag_f”
If you then enter Tags into that field, the Tag module does the rest, and adds it to the entry
As for editing, as it appears that program might be able to do, it gets a little trickier… as that field does not actually hold that Tag data. It would appear empty should you try to load the entry for editing again. The workaround is using the exp:tag:tags loop within that field to pull current Tags, although that’s probably not an option for this program (but available for SAEF).