[Feature] <title>Batch modification of parameters for monitoring items

### Feature Request

Batch modification of parameters for monitoring items

### Is your feature request related to a problem? Please describe

For instance, if there are numerous monitoring items, one can directly modify parameters in batch, such as collectors (in case of multiple collectors), tags, monitoring cycles, ping timeouts, etc., which can indirectly achieve load balancing

### Describe the solution you'd like

_No response_

### Describe alternatives you've considered

_No response_

### Additional context

_No response_

The issue names no files, tests, or entry points. Start by locating the monitoring-item parameter update flow and documenting how collectors, tags, monitoring cycles, and ping timeouts are stored and changed. Done requires an agreed scope and design for safely applying those parameters to multiple monitoring items, including load-balancing considerations.

Written by the indexing model from the issue text.