When I wanted to achieve something like that, this is what I did:

package Foo::One;
use warnings;
use strict;
use base qw/Foo Exporter/;
our @EXPORT_OK = qw/action1/;
sub action1 { ... }

package Foo::Two;
use warnings;
use strict;
use base qw/Foo Exporter/;
our @EXPORT_OK = qw/action2/;
sub action2 { ... }

package Foo;
MHT::One->import (qw/action1/);
MHT::Two->import (qw/action2/);

our %EXPORT_TAGS = (
    One => [qw/action1/],
    Two => [qw/action2/],
);

Exporter::export_ok_tags keys %EXPORT_TAGS;
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And later:

use Foo qw/:One :Two/;
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Which is basically what BrowserUk suggests.