VKB-SIM

I'm trying to create a macro that when buttom 10 is press it fires button 10 > waits > fires button 3 > waits > releases both then repeats
Button 10 press > 600MS > Button 3 press > 625ms > buttom 1 release > 600ms > button 10 release > Repeat

Can someone please help this software is NOT intuitive at all even after looking at the forums and youtube for hours.

???
3 release I think?

This is almost there, it fires the first button but still won't fire the second button even though in the test box it shows it is firing button 3! It's actually button 1 and 3 not 10 and 3, so I just modified your numbers. So it says it's doing it in the software but doesn't actually do it in game.

Image link > https://ibb.co/wZHKypM

After further testing it is trying to fire the second button but it isn't holding the second button long enough, it fires first but releases second to early, so button 3 needs to be held longer.

Button 10 press > 600MS > Button 3 press > 625ms > buttom 3 release > 600ms > button 10 release

This is anything but simple this software is absolute garbage!!! Honestly great hardware but for me this software isn't worth downloading! There should be a record macro sequence and then an editor to change time intervals after you record what you want done.

Okay so let me attack this from another angle
Can I have the software hold one button and then 300ms later hold another button?

Press button 4 it then presses and holds button 1, waits 300ms, presses and holds button 3 until I release button 4?

I would suggest to try the software yourself, Alex already provided hints on how to achieve your goal.
And for my curiosity - in which game and what kind of binding are you trying to set up?