Open Webs Editor
Navigate to the page where you'd like to add your Map plugin.
Add HTML Code
At the bottom of the Webs editor are the various site components. Click Other to reveal the Custom HTML component. Then, drag the Custom HTML component to where you'd like your Map plugin to appear on the page.
A gray Custom HTML box will appear on your page.
Double click the box to open the popup where we'll paste the HTML in the next step.
Paste this code into the gray box and save.
Note, Because Webs does not dynamically resize elements, you may need to change the height parameter in the embed snippet so the plugin fits nicely on the page. Eg to increase the height to 700px simply write: height='700px'.
Edit your Map on Webs:
Go to your live Webs website and click the gear icon in the upper right corner of the Map Plugin.