Hello, Vadim Makarov.
On 10.02.17 9:36 AM you wrote:

 VM> äαπº∞∩!  é ßπ¼Ññ¿¬Ñ, úñÑ ∩ ¼«ñÑαáΓ«α«¼, ºáó±½ß∩ Çα¬á¡«ó. ü«εß∞ 
 VM> ¡áñ« íπñÑΓ αáßτÑσ½∩Γ∞ »½εß«¼±Γ.  èá¬ ó »«½Ñ Σα«¼ ó»¿ßáΓ∞ 
 VM> ¼«ñÑαáΓ«α?

Sorry, changing the from name is not yet implemented. It will be available in
the nearest versions. 

As a workaround try a temporary name changing in server or group settings, then
 after everything is done revert it back. 
 
 VM> Å«ªá½π⌐ßΓá, Ñß½¿ ¼«ª¡«, «ΓóÑΓ¿Γ∞ ¡á απß߬«¼. 

Å«¬á τΓ« ߼ѡ¿Γ∞ ¿¼∩ ÄΓ ¡á óαѼѡ¡«Ñ ¡Ñ½∞º∩. 

Äíσ«ñ¡«⌐ »πΓ∞: ߼ѡ¿Γ∞ Ñú« ó ¡áßΓα«⌐¬áσ ßÑαóÑαá ¿½¿ úαπ»»δ, ºáíá¡¿Γ∞
¡áαπΦ¿Γѽ∩, »«¼Ñ¡∩Γ∞ ¡áºáñ. 

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Best regards!
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