> ## Documentation Index
> Fetch the complete documentation index at: https://docs.xbox.com/llms.txt
> Use this file to discover all available pages before exploring further.

# XblMultiplayerMemberInitialization

> XblMultiplayerMemberInitialization

Represents requirements for a new Multiplayer service session.

## Syntax

```cpp theme={null}
typedef struct XblMultiplayerMemberInitialization {  
    uint64_t JoinTimeout;  
    uint64_t MeasurementTimeout;  
    uint64_t EvaluationTimeout;  
    bool ExternalEvaluation;  
    uint32_t MembersNeededToStart;  
} XblMultiplayerMemberInitialization  
```

### Members

*JoinTimeout*\
Type: uint64\_t

Maximum time, in milliseconds, for the joining stage of the Quality of Service (QoS) process.

*MeasurementTimeout*\
Type: uint64\_t

Maximum time, in milliseconds, for the measurement stage of the QoS process.

*EvaluationTimeout*\
Type: uint64\_t

Maximum time, in milliseconds, for the evaluation stage of the QoS process.

*ExternalEvaluation*\
Type: bool

When set to true, indicates that the title performs the evaluation stage.

*MembersNeededToStart*\
Type: uint32\_t

Minimum number of members for the session. Defaults to 2. Must be between 1 and `maxMemberCount`. Applies only to the joining stage.

## Member of

[XblMultiplayerSessionConstants](https://docs.xbox.com/reference/live/xsapi-c/multiplayer_c/structs/xblmultiplayersessionconstants.md)

## Argument of

[XblMultiplayerSessionConstantsSetMemberInitialization](https://docs.xbox.com/reference/live/xsapi-c/multiplayer_c/functions/xblmultiplayersessionconstantssetmemberinitialization.md)

## Requirements

**Header:** multiplayer\_c.h

## See also

[multiplayer\_c](https://docs.xbox.com/reference/live/xsapi-c/multiplayer_c/multiplayer_c_members.md)


## Related topics

- [XblMultiplayerSessionConstantsSetMemberInitialization](https://docs.xbox.com/reference/live/xsapi-c/multiplayer_c/functions/xblmultiplayersessionconstantssetmemberinitialization.md)
- [XblMultiplayerSessionMemberStatus](https://docs.xbox.com/reference/live/xsapi-c/multiplayer_c/enums/xblmultiplayersessionmemberstatus.md)
- [XblMultiplayerSessionConstants](https://docs.xbox.com/reference/live/xsapi-c/multiplayer_c/structs/xblmultiplayersessionconstants.md)
- [multiplayer_c (contents)](https://docs.xbox.com/reference/live/xsapi-c/multiplayer_c/multiplayer_c_members.md)
- [XblMultiplayerSessionInitializationInfo](https://docs.xbox.com/reference/live/xsapi-c/multiplayer_c/structs/xblmultiplayersessioninitializationinfo.md)