How to add custom text message in Responsive self service application in supplier and supplier site

Summary:

Currently in Classic self service procurement we have enabled the touchless buying feature, To enable the touchless buying we need to enter supplier and supplier site information mendatorily.

In Classis Self service procurement we have added custome text message "Kindly Contact strategicsourcing@calix.com if you don't have Supplier and Site Information.". just above the Supplier field text box.

Since this is important text message for our requestors for touchless buying execution, We want to add the similar text message in Redwood Responsive self service procurement and at the same position.

Please see the screen shot of both i.e. Classic Self service procurment and Redwood UI Responsive self service procurement