@apeawakening
Assuming that the value you put in the From is an array lets do this.
I have made an example.
Before the Send Email Action (remember above it)
1. Add a Select Action
2. in the From, add the value that you had added to the To Email line. In my case its a variable I made up to look like your array of Email addresses
3. in the Select, there is a little Icon next to the end of the Map input. Click it to turn into advanced mode. The icon you see blow is what I mean

4. once the advanced mode comes up, click in the Box to set the value. When the Popup window appears, click on the Expression Tab and type this
item()['Email']
And click ok. You will see the below, EXCEPT that your From should show your value as I asked you to place there

5. Under the Select Action, I want you to add a Compose action
-When you in the input box, the Popup window appears. In the Expression tab type or copy and paste mine
replace(join(body('Select'),','), ',', ';')
6. In your Send email. Remove the current Value you have for the To.
-Click the To Input box so that the PopUp window appears
But this time, on the Dynamic Content Tab (the first one), you will see the Dynamic Property called Outputs, under your Compose, click that

Important NOTE: If you have already used a Select or a Compose, then the Names will be different, so you need to update the expressions I gave you to those names.
Example: In my expression I say body('Select'), but if you already had a previous Select, then you need to get the Name from the New Select title bar and replace Select, with that. Also remember if there are Spaces like Select 2, you need to type it like this Select_2 because spaces arent valid in an expression
If you like my answer, I would really appreciate if you please Mark it as Resolved, and give it a thumbs up, so it can help others
Cheers
Thank You
Michael Gernaey MCT | MCSE | MCP | Self-Contractor| Ex-Microsoft
https://gernaeysoftware.com
LinkedIn: https://www.linkedin.com/in/michaelgernaey