hi @ajayravi-94
Following are the step to embed canvas app within your model driven main form
1)first you need to create the canvas app once you have created the app just save that.
2)after creating canvas app go back and select the app which you have created copy the app name and app id (To copy the app id select the app and then goto details from three dots from their you get app id)
3)Add one more field in the table where you want to embed the canvas app because we are embedding the canvas app as a control within main form .
4)Open the main form in switch to classic mode
5)Select the field which you have created in table which i told in 3rd step for embedding canvas app then double click on that field and then field property page will open ,in that page there will be a difference option available like display, business rule ,details, event but just select control from there
Then click on add control then from there select canvas app as follow and then click on add
After clicking on add button following type of page will open make sure that all three radio button should be on for canvas app as you can see in image
Then provide the same canvas aap name while editing app and app id as shown in below figure
After that just save the changes and publish it
So, in that way you can embed the canvas app within model driven app
