To change the setting, navigate to the SharePoint Online admin center:

1. Sign in to Office 365 as a global admin or SharePoint admin.
2. Select the app launcher icon in the upper-left and choose Admin to open the Office 365 admin center. (If you don’t see the Admin tile, you don’t have Office 365 administrator permissions in your organization.)
3. In the left pane, choose Admin centers > SharePoint.

Change the default link type (SharePoint Online global setting)

1. In the left pane, choose sharing.
2. Under Default link type choose the option you want to show by default when a user gets a link.

   

3. Under Default link permission choose whether you want the default permission to be view or edit.

   

Change the default link type (site collection setting)

1. In the left pane, choose site collections.
2. Select the site collection that you want to change, and then click Sharing.
3. Under Default link type, clear the Respect default organization setting check box, and then choose the option you want to show by default when a user gets a link.

   

4. Under Default link permission, clear the Respect default organization setting check box, and then choose whether you want the default permission to be view or edit.

   

5. Click Save.