Hi Randal,
Thank you for getting in touch with us, and our sincerest apologies for any inconvenience this may have caused.
You may use the Marker Editor Panel to add content to your marker’s infowindow when creating or editing a marker. Should you need here are the steps for creating a marker:
1. Navigate to your Map Editor (Maps -> Maps -> Edit).
2. Scroll down to the Marker Editor Panel that is displayed with the heading “Add a new marker”.
3. Enter your respective information for your marker.
4. Click the “Add marker” button.
Once this has been done, your marker should be displayed on your map with the respective marker content that you had entered.
To edit a marker, you will need to click the “Edit this marker” (pencil icon) on the respective marker in the marker listing which is found toward the bottom of your Map Editor.
Please do let me know if this helps?
I look forward to hearing back from you.
Kindest Regards,
Matthew