Notion for iPad nOOb

Ok, I just downloaded and bought the Notion app for iPad
I'm having a helluva time (pardon my French) just figuring out how to change time sigs plus key sigs . . . I found how to transpose an instrument - but that doesn't sit right with me (to do it that way) there's got to be a better way to do it - be gentle folks, I'm a finale user that is trying to work with Notion (as I think it's a program worth it's weight in gold!)
I'm also considering getting it for my mac (desktop machine) but I'd rather get the skinny on the iPad version first before I buy for my laptop . . . .
And for those that ask - yes - I read the manual.
I'm having a helluva time (pardon my French) just figuring out how to change time sigs plus key sigs . . . I found how to transpose an instrument - but that doesn't sit right with me (to do it that way) there's got to be a better way to do it - be gentle folks, I'm a finale user that is trying to work with Notion (as I think it's a program worth it's weight in gold!)
I'm also considering getting it for my mac (desktop machine) but I'd rather get the skinny on the iPad version first before I buy for my laptop . . . .
And for those that ask - yes - I read the manual.