OTB
tabActivate
boxOTB folder
and set it to the folder where you saved the OTB download files e.g. "C:\OTB-7.0.0-Win64”. This is the location of your OTB installation.OTB application folder
and set it to e.g. "C:\OTB-7.0.0-Win64\lib\otb\applications" This is the location of your OTB applications.ok
to save settings and close dialog. If settings are correct, you will have the OTB algorithms loaded in QGIS Processing toolbox.