Mouse Click marker to display infowindow in placeholder on ‘MouseClick’ Event.To show infowindow you should do following steps :

Step 1 Go to Add or Edit Map and scroll down to ‘Infowindow Settings’ section.

Step 2 Point to ‘Show Infowindow on’ option and select ‘Mouse Click’ from drop down list.

How to show info window of map on Mouse Click Wpmapspro

Step 3 Save the map and open it in a browser.