> ## Documentation Index > Fetch the complete documentation index at: https://docs.openlayer.com/llms.txt > Use this file to discover all available pages before exploring further. # Assign groups > Group API keys so they share usage limits and guardrails A group is a grouping of API keys. Put related keys in a group, and any **usage limit** or **guardrail** you scope to that group applies to all of them at once. It's the way to govern many keys with one rule, like a single monthly spend cap across every app a squad ships. ## Create a group Groups are created inline, wherever you pick one. When you create an [API key](/gateway/api-keys) or an [invite](/gateway/invites), type a new name in the **Group** picker and the group is created on the spot. Existing keys can be moved onto a group from the API keys table. Creating a group from the group picker ## How group rules combine with key rules Usage limits and guardrails can target a single key or a whole group. When both exist, both apply: * A **group limit** caps the combined usage of every key in the group. * A **key limit** caps that one key, on top of any group limit. Guardrails work the same way. Scope a rule to a group to cover every key at once, or to a single key for an exception. See [Set usage limits](/gateway/budgets-and-limits) and [Guardrails](/gateway/guardrails).