What this extension does:
If customers are not logged in, they should be redirected to login page whenever they click checkout

Install

1. go to Admin > Extensions > extension installer
2. Extract the zip file, upload omw_checkout_redirect_login.ocmod.xml
3. go to modifications, click refresh.



To disable this,
go to modifications and click disable button on the right side of this extension,
then go to Extensions > Modifications and click refresh

To enable this again,
go to modifications and click enable button on the right side of this extension,
then go to Extensions > Modifications and click refresh