# How-to guides

Use these guides to purchase, assign, unassign, remove, and manage additional inbound call Capacity for DID numbers.

## Channels

**Purchase flat-rate channels**

Purchase additional flat-rate channels from a Standard, Extended, or Custom pool.

[Purchase flat-rate channels](purchase-flat-rate-channels.html)

**Manage dedicated channels**

Assign or unassign dedicated channels for one or more DID numbers.

[Manage dedicated channels](manage-dedicated-channels.html)

**Manage shared channels**

Assign or unassign shared channels in Capacity groups.

[Manage shared channels](manage-shared-channels.html)

**Manage metered channels**

Assign or unassign pay-per-minute channels in Capacity groups.

[Manage metered channels](manage-metered-channels.html)

**Remove flat-rate channels**

Remove unassigned flat-rate channels from a channel pool.

[Remove flat-rate channels](remove-flat-rate-channels.html)

## Capacity groups

**Create a capacity group**

Create a group for shared channels, metered channels, or both.

[Create a capacity group](create-capacity-group.html)

**Edit a capacity group**

Update group name, shared channels, or metered channels.

[Edit a capacity group](edit-capacity-group.html)

**Manage DID(s) in a group**

Assign or remove DID numbers directly inside a Capacity group.

[Manage DID(s) in a group](manage-dids-in-group.html)

**Delete a capacity group**

Delete a Capacity group that is no longer needed.

[Delete a capacity group](delete-capacity-group.html)

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