The obvious basic assumption is that your LMS supports LTI and that LTI has not been disabled by the LMS administrators.
Setup varies according to LMS type.
In some LMS types you first define an External Tool and later use that definition when creating External Tool Links, while in other LMS types you enter the External Tool parameters on each link you create.
The basic information usually required when defining an External Tool:
A few points to notice:
See below some information we have for specific LMS
To configure ForClass on Canvas, go to the “Settings” page of your course and select the “Apps” tab.
You can add ForClass using either of the following methods:
In Blackboard there’s no initial setup step. You define the tool parameters on each tool provider link that you create.
To add LTI links to your content:
You’ll find the tool definition screen in “Site Info” => “External Tools” => “Tools Available in System”.