Make first measure pickup measure?

[arco]

Did you search the forum for pickup bars?
One here

Adding pick up bar in Dorico 5

I have written a song using Dorico 5 (I am new to Dorico 5, having previously used Finale). I would like to add a pick up bar and a corresponding bar at the end of the song. I found one method on Youtube but when I added the pickup bar it affected the last bar of the frame on page 1. Can anyone tell me a way to add the pick up and end bars without impacting the rest of the song?

Another

Adding a pickup bar

If I have the following: [Pickup-bar-ex] I would want to have only two quarter beats in the first bar, but when I enter “4/4,2” in the meter popup I get: [Pickup-bar-ex2] So I then have to select everything and move it over. Is there any way to avoid the extra steps of moving all notes after changing the first bar into a pickup bar and get directly to: [Pickup-bar-ex3] ?

otherwise a screenshot of your first bar and someone can give you step-by-step instructions