Multisend is a replacement for servo. No synchronization is needed, just load and go.

Commands to send input to other instances on the same PC: /ms send [command] - Sends the command to all characters with MultiSend loaded. /ms sendto CharName [command] - Sends the command to a specific character, if they have MultiSend loaded. /ms sendgroup GroupName [command] - Sends the command to all characters listed in a group. Groups can be defined in Ashita/Config/MultiSend.xml. See XML Structure file for example.
/ms sendothers [command] - Sends a command to all characters except for the current character. /ms sendparty - Sends a command to all characters in the current character's immediate party. This includes the current character unless ignoreself is turned on. /ms sendally - Sends a command to all characters in the current character's immediate alliance. This includes the current character unless ignoreself is turned on.

These have hardcoded aliases as well: /mss = /ms send /mst = /ms sendto /mso = /ms sendothers /msp = /ms sendparty /msa = /ms sendally /msg = /ms sendgroup

Configuration: /ms followmax # - Sets a max range(in yalms). If follow target is more than this many yalms away, but in same zone, follow won't move. -I recommend setting between 30 and 100 to prevent following from trying to use portals. -Default is 5000, which will be the same behavior as before this setting was added. /ms followme on/off - Enables or disables followme. When followme is enabled, any characters with follow enabled will follow the player who last activated followme. Default: OFF. /ms follow on/off - Enables or disables follow. Any character with follow enabled with follow the player who last activated followme. Default: ON /ms attemptzone on/off - Enables or disables attempted zoning. When enabled, if the leader zones, the other characters will continue running in the direction they were last running to follow suit. Default: OFF NOTE: If you are using a home point, survival guide, etc, it will be detected as long as you stand still throughout the process and nobody will run off. CONT: If you move after first acting upon the object or sending an uberwarp command, chars may run off. /ms ignoreself on/off - When enabled, any command that would effect the local character is not executed by the local character. Default: OFF /ms debug on/off - When enabled, all received commands are printed to log and any character with followme updated will spam log with position updates. For debug purposes, obviously. Default: OFF /ms reload - Will reload groups xml. /ms help - Print an ingame reference.

You may use [t] [me] or [p0] [p1] [p2] [p3] [p4] [p5] to replace the <> equivalents, if you wish to resolve them on local character. This will replace them with the appropriate server IDs, allowing the command to resolve on receiving character.

Example: Typing /ms send /ma "Fire IV" [t] will make all characters with multisend loaded cast Fire IV on the character who typed the command's target, rather than their own current target.