Basic rule for multiple LNBF dishes, when the aiming LNBF is locked in and the Skew is properly set, the other LNBFs will be locked in. This all assuming the mast is vertical.
The meter does look like a clone of the First Strike. You have to insure the satellites are in the parameters tables. When I bough a First Strike FS1 I had to download the Dish satellites.
I have used the Acutrac 22 Pro, which gave signal strength on two LNBFs, and a First Strike FS1 which identifies the lock in satellite. Now I have a Super Buddy 29 which deals with Hybrid LNBFs, identifies the aiming satellite, and gives readings of all the LNBFs. Wish I had the Super Buddy 29 from the beginning.