In order to install the Host App on the ICR, please install the TeamViewerHost.apk first. This app also requires an add-on called Quick Support Add-on. Please copy both .apk files onto a flash drive. Insert the flash drive into the ICR and go to OI File Manage. Once there, tap on storage, USBcard and tap on the TeamViewerQSAddon_teclast_v2.apk file. This should prompt the installation.
After that, you can open the host app, log in to your account and start hosting.
Please follow this link on how to install the host on your teamviewer account. https://community.teamviewer.com/t5/Knowledge-Base/Mass-deployment-for-TeamViewer-Host-for-Android/ta-p/44