...
- Define the purpose for the additional fields
- Determine if every Device Type Group needs to have this field, or only one specific TypeGroup? More information on Groups can be found HERE: Groups
- What type of information will be stored in the field
- How will the field be populated?
- Create the new Field. More information on Fields can be found HERE: Fields
- Populate the field and test
Reporting
You can include custom Fields in Queries, but not Reports or Summaries. The general process for for creating a custom report is covered HERE: Creating Custom Reports, with details on using custom Fields covered indepth HERE: Create a Query containing Custom Fields