A bahtinov is best but in sharpcap there is also fwhm. Just run short subs (0.2 - 2secs) with fwhm. Set gain high so you can see some starts and focus until it reaches a minimum value.
I haven't used that camera but others like it (asi224/071). For live viewing of DSOS I run 2-5sec subs at really high gain and line up the object.
Then I do10-30sec subs with midrange gain. You'll start to see something - check the histogram to see that's it a bit off the left side. Then start the live stacking - you can tweak the histogram to bring out the object. You'll easily see brighter DSOs within a minute or so.
Also there's now a manual for it
https://www.google.com.au/url?sa=t&s...i3-cb4d7jlwqDg
There's some great youtubes on it. And depends on whether you want quick images or nice clean ones. Sharpcap is more for quick live stacking